package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * 用户端菜品接口
 */
@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "C端-菜品接口")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     * @param categoryId 分类id
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> getById(Long categoryId) {
        log.info("根据分类id查询菜品:{}",categoryId);
        // 根据redis来查询数据，设置key: dish_分类ID 这里用String来保存
        String key = "dish_" + categoryId;
        // 获取数据 如果redis中存在数据，则直接返回
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(list != null && !list.isEmpty()){
            return Result.success(list);
        }
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品
        list = dishService.listWithFlavor(dish);
        // 如果redis没有缓存过数据的话 就设置缓存
        redisTemplate.opsForValue().set(key,list);

        return Result.success(list);
    }
}
